Preparation and Characterization of High Functional Ophthalmic Lens Material Containing Acrylic Formation Isocyanate Group with Carbon Nanoparticles

摘要

This research was conducted to produce the high functional hydrogel ophthalmic lens containing isocyanate group and nanoparticles. IsoMA (2-Isocyanatoethylmethacrylate) and carbon nanoparticles were used as additives for the basic combination including HEMA (2-hydroxyethyl methacrylate), MA (methacrylic acid), and MMA (methyl methacrylate). And also, the materials were copolymerized with EGDMA (ethylene glycol dimethacrylate) as the cross-linking agent and AIBN (azobisisobutyronitrile) as the initiator. Measurement of the physical characteristics of the produced material showed that the refractive index was 1.4027 similar to 1.4446, water content 31.13 similar to 44.01%, contact angle 43.99 similar to 65.67 degrees, visible light transmittance 26.17 similar to 92.13%, and tensile strength 0.0652 similar to 0.2528 kgf. The breaking strength were in the range of 0.0872 similar to 0.1851 kgf. These results showed the decrease of contact angle and increase of water content by the addition of IsoMA and carbon nanoparticles and that showing both additives made synergy effect of wettability. As a result of the absorbance measurement, no significant difference was observed in all the samples, so it can be judged that the stabilization of nanoparticles in the polymer was maintained. Therefore, these materials considered to satisfy the basic requirements of ophthalmic lenses with high performance of tensile strength, breaking strength and wettability.